Most, if not all, entomologists involved in the development of cotton insect management systems agree that an essent1al part of a successful Integrated Pest Management (IPM) program is the ava;lability of an eff1cac1o

Irrigation scheduling in cotton using the water balance program WATERSCHED has been the subject of an extension development project in Queensland for two years. The project is funded by Cotton Research Council.

SIRATAC users have the option early in the season of using standard thresholds or dynamic thresholds which vary between the standard level and an upper limit.

Insecticides can poison insects in many ways. Insecticides r...:an interfere with metabolic processes , of energy production, cuticular growth and hormone production.

Irrigation trials have been conducted at Byee over the last two seasons as part of a Statewide project funded by the Cotton Research Council.

The Siratac system when it was originally conceived had no database system included in the workings of the system.

At the time of the initiation of the H.armigera resistance management strategy, there was a need to demonstrate that any increase in resistance was limited to crops sprayed with pyrethroids.

You are all aware that currently there are three varieties available commercially: Siokra 1-2, Sicala 3-1 and DP90 (Deltapine - Acala) .

All insecticide management decisions require a solid platform of reliable data and this can only be achieved by a long term committment to pesticide studies, obtaining baseline susceptibility data and monitoring of ch

Seedling diseases include seed rots, pre and post emergent damping 9ff and root pruning. Numerous fungi can be responsible although Rhizoctonia sp., Pythiwn spp. and Fusarium spp. are the most important.

The frequency of resistance to synthetic pyrethroids in Heliothis armigera has been monitored in the Namoi Valley since the introduction of the insecticide resistance management strategy in 1983.

in the Gwydir Valley where the water resource has been over committed to such an extent that a full allocation of water will only be realized only SO years out of every 100 years.

This Overview has been compiled after talking with a limited number of growers from most districts, and as could be expected there were some opposite opinions expressed.

Host Plant resistance is one such method and has been adopted in developing plant resistance to a range of plant problems. Plants posses both natural physiological and chemical defence mechanisms.

The actual decision regarding which seed variety to plant had to be made some months -ago by growers through CSD, this decision is mostly based upon a number of factors, viz: 1: Yield 2: Resistance to insects and dise

The major Australian cotton yarn spinners are encouraged by the improvements the researchers and the growers have managed to obtain in the newer varieties.

To investigate soil response to compaction, a range of cracking clay soils (Vertisols) were collected from major cotton growing areas in Queensland and subjected to a uni-axial-compression.

In recent times cotton growers have seen the need to adopt new land preparation practices. In the Macquarie Valley alone, only 35% of the 1987/88 cotton crop was prepared using conventional techniques.

There are increasing areas of cotton grown in regions which are prone to cool seasons, eg. the Darling Downs, the upper Namoi and upper Macquarie valleys.

The presence of right-angle bending in cotton tap roots clearly shows the restrictions which degradation of soil structure imposes on cotton growth.